Question

congratulation for your success in is informal letter yes or no​

Answer 1

Answer:

The name of the recipient must be written on the letter at the top. The letter must be there in a polite tone. It might be either an official one or a personal one, and thus the format should be considered accordingly. Official letters have a formal tone, and personal ones are informal letters.

Answer 2

Answer:

It depends on the profession of the person it is being sent by.

If it is from your family, friends or relatives, it comes under the category of "informal letter".

But, if it is from your boss, or anyone of higher authority or position than you, it comes under the category of "formal letter", since these are the people who are in business level.

It usually is informal letter format, but it can vary.

Hope this helps..